PLATE RATIO 39-8 FRONT&REAR AXLE (SET OF 2)
Ratio plate 39-8 for differentials
Set of 2 pieces
Metal identification plates for differentials with 4.88:1 gear ratio. These plates were fitted to the differential housings of front and rear axles to indicate the ratio (39 teeth ring gear, 8 teeth pinion). Essential for correct identification during restoration and maintenance.
|
Type Ratio identification plate |
Ratio 88:1 (39-8) |
|
Contents Set of 2 plates |
Fitting Differential housing front and rear axle |
Features
- Stamped with ratio designation 39-8
- For identification of 4.88:1 gear ratio
- Suitable for fitting to differential housing
- Set contains 2 plates (front + rear)
- Repro to original specifications
★ These ratio plates are essential for a correct restoration. They were originally fitted to the differential housing with one of the differential cover bolts.
Compatibility
The 4.88:1 ratio was used on various post-war jeep models as an alternative to the standard 5.38:1. For 4WD vehicles, front and rear axles must have the same ratio to prevent damage to the drivetrain.
Historical context
The ratio plates served as quick identification of the gear ratio for mechanics in the field. The 4.88:1 (39 teeth ring gear, 8 teeth pinion) offered a better balance between pulling power and speed than the lower 5.38:1 ratio.
This description was generated automatically. Unsure about fitment? Contact us at info@willys.be.
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This part is intended for the restoration of historic military vehicles. Fitting, aligning, deburring or reworking is part of that work and is inherent to the nature of these goods. Dimensional variation also exists between original vehicles.
Installation requires technical knowledge of the vehicle. Unsure whether this part suits your version? Ask us before purchase at info@willys.be.
ALL_CATEGORIES : GROUP 11 - REAR AXLE
This part fits:
| Model | Years |
|---|---|
| Military jeeps | |
| Willys MB (early) | 1941, 1942 |
| Willys MB | 1942, 1943, 1944, 1945 |
| Ford GPW | 1942, 1943, 1944, 1945 |
📐 Diagrams & technical drawings
From the original Technical Manual TM 9-1803B — Ordnance Maintenance — Power Train, Body & Frame — only for Willys MB / Ford GPW (¼-ton 4×4)
